Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models

©2015. American Geophysical Union. All Rights Reserved. Observations show that the lower thermosphere of Mars (∼100-140 km) is up to 40 K colder than the current general circulation models (GCMs) can reproduce. Possible candidates for physical processes missing in the models are larger abundances of...

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Autores: Medvedev, A.S., González-Galindo, F., Yiğit, E., Feofilov, A.G., Forget, F., Hartogh, P.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/148538
Acceso en línea:http://hdl.handle.net/10261/148538
Access Level:acceso abierto
Palabra clave:Gravity waves
General circulation
CO(2)cooling
Mars thermosphere
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spelling Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation modelsMedvedev, A.S.González-Galindo, F.Yiğit, E.Feofilov, A.G.Forget, F.Hartogh, P.Gravity wavesGeneral circulationCO(2)coolingMars thermosphere©2015. American Geophysical Union. All Rights Reserved. Observations show that the lower thermosphere of Mars (∼100-140 km) is up to 40 K colder than the current general circulation models (GCMs) can reproduce. Possible candidates for physical processes missing in the models are larger abundances of atomic oxygen facilitating stronger CO<inf>2</inf> radiative cooling and thermal effects of gravity waves. Using two state-of-the-art Martian GCMs, the Laboratoire de Météorologie Dynamique and Max Planck Institute models that self-consistently cover the atmosphere from the surface to the thermosphere, these physical mechanisms are investigated. Simulations demonstrate that the CO<inf>2</inf> radiative cooling with a sufficiently large atomic oxygen abundance and the gravity wave-induced cooling can alone result in up to 40 K colder temperature in the lower thermosphere. Accounting for both mechanisms produce stronger cooling at high latitudes. However, radiative cooling effects peak above the mesopause, while gravity wave cooling rates continuously increase with height. Although both mechanisms act simultaneously, these peculiarities could help to further quantify their relative contributions from future observations.The work was partially supported by German Science Foundation (DFG) grant ME2752/3-1. F.G.G. was funded by a CSIC JAE-Doc contract cofinanced by the European Social Fund. F.G.G. thanks the Spanish MICINN for funding support through the CONSOLIDER program ASTROMOL CSD2009-00038, and through project AYA2011-23552/ESP. E.Y. was partially supported by NASA grant NNX13AO36G.Peer ReviewedAmerican Geophysical UnionGerman Research FoundationConsejo Superior de Investigaciones Científicas (España)Ministerio de Economía y Competitividad (España)NASAConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2017201720152017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/148538reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/633127http://dx.doi.org/10.1002/2015JE004802Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1485382026-05-22T06:33:51Z
dc.title.none.fl_str_mv Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
title Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
spellingShingle Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
Medvedev, A.S.
Gravity waves
General circulation
CO(2)cooling
Mars thermosphere
title_short Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
title_full Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
title_fullStr Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
title_full_unstemmed Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
title_sort Cooling of the Martian thermosphere by CO(2) radiation and gravity waves: an intercomparison study with two general circulation models
dc.creator.none.fl_str_mv Medvedev, A.S.
González-Galindo, F.
Yiğit, E.
Feofilov, A.G.
Forget, F.
Hartogh, P.
author Medvedev, A.S.
author_facet Medvedev, A.S.
González-Galindo, F.
Yiğit, E.
Feofilov, A.G.
Forget, F.
Hartogh, P.
author_role author
author2 González-Galindo, F.
Yiğit, E.
Feofilov, A.G.
Forget, F.
Hartogh, P.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv German Research Foundation
Consejo Superior de Investigaciones Científicas (España)
Ministerio de Economía y Competitividad (España)
NASA
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Gravity waves
General circulation
CO(2)cooling
Mars thermosphere
topic Gravity waves
General circulation
CO(2)cooling
Mars thermosphere
description ©2015. American Geophysical Union. All Rights Reserved. Observations show that the lower thermosphere of Mars (∼100-140 km) is up to 40 K colder than the current general circulation models (GCMs) can reproduce. Possible candidates for physical processes missing in the models are larger abundances of atomic oxygen facilitating stronger CO<inf>2</inf> radiative cooling and thermal effects of gravity waves. Using two state-of-the-art Martian GCMs, the Laboratoire de Météorologie Dynamique and Max Planck Institute models that self-consistently cover the atmosphere from the surface to the thermosphere, these physical mechanisms are investigated. Simulations demonstrate that the CO<inf>2</inf> radiative cooling with a sufficiently large atomic oxygen abundance and the gravity wave-induced cooling can alone result in up to 40 K colder temperature in the lower thermosphere. Accounting for both mechanisms produce stronger cooling at high latitudes. However, radiative cooling effects peak above the mesopause, while gravity wave cooling rates continuously increase with height. Although both mechanisms act simultaneously, these peculiarities could help to further quantify their relative contributions from future observations.
publishDate 2015
dc.date.none.fl_str_mv 2015
2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/148538
url http://hdl.handle.net/10261/148538
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/633127
http://dx.doi.org/10.1002/2015JE004802
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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